The following table outlines the options available for the NETFLOW procedure classified by function. An alphabetical list of options is provided in the Dictionary of Options.
Table 6.1: Functional Summary
Description |
Statement |
Option |
---|---|---|
Input Data Set Options: |
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Arcs input data set |
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Nodes input data set |
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Constraint input data set |
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Output Data Set Options: |
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Unconstrained primal solution data set |
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Unconstrained dual solution data set |
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Constrained primal solution data set |
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Constrained dual solution data set |
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Convert sparse or dense format input data set into MPS format output data set |
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Data Set Read Options: |
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Default constraint type |
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Special COLUMN variable value |
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Special COLUMN variable value |
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Used to interpret arc and nonarc variable names |
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No new nonarc variables |
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No nonarc data in ARCDATA |
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Data for an arc found once in ARCDATA |
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Data for a constraint found once in CONDATA |
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Data for a coefficient found once in CONDATA |
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Data are grouped, exploited during data read |
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Problem Size Specification Options: |
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Approximate number of nodes |
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Approximate number of arcs |
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Approximate number of nonarc variables |
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Approximate number of coefficients |
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Approximate number of constraints |
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Network Options: |
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Default arc cost |
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Default arc capacity |
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Default arc lower flow bound |
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Network’s only supply node |
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SOURCE’s supply capability |
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Network’s only demand node |
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SINK’s demand |
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Convey excess supply/demand through network |
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Cost of bypass arc for MAXFLOW problem |
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Specify generalized networks |
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Specify excess demand or supply |
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Memory Control Options: |
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Issue memory usage messages to SAS log |
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Number of bytes to use for main memory |
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Proportion of memory for arrays |
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Memory allocated for LU factors |
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Linked list for updated column |
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Use 2-dimensional array for basis matrix |
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Maximum bytes for a single array |
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Simplex Options: |
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Use big-M instead of two-phase method, stage 1 |
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Use Big-M instead of two-phase method, stage 2 |
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Anti-cycling option |
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Interchange first nonkey with leaving key arc |
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Controls working basis matrix inversions |
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Maximum number of L row operations allowed before refactorization |
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Maximum number of LU factor column updates |
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Anti-cycling option |
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Use first eligible leaving variable, stage 1 |
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Use first eligible leaving variable, stage 2 |
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Negates INTFIRST |
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Negates LRATIO1 |
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Negates LRATIO2 |
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Negates PERTURB1 |
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Anti-cycling option |
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Controls working basis matrix refactorization |
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Use two-phase instead of big-M method, stage 1 |
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Use two-phase instead of big-M method, stage 2 |
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Pivot element selection parameter |
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Zero tolerance, stage 1 |
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Zero tolerance, stage 2 |
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Zero tolerance, real number comparisons |
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Pricing Options: |
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Frequency of dual value calculation |
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Pricing strategy, stage 1 |
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Pricing strategy, stage 2 |
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Used when P1SCAN=PARTIAL |
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Controls search for entering candidate, stage 1 |
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Used when P2SCAN=PARTIAL |
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Controls search for entering candidate, stage 2 |
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Initial queue size, stage 1 |
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Initial queue size, stage 2 |
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Used when Q1FILLSCAN=PARTIAL |
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Controls scan when filling queue, stage 1 |
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Used when Q2FILLSCAN=PARTIAL |
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Controls scan when filling queue, stage 2 |
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Queue size reduction factor, stage 1 |
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Queue size reduction factor, stage 2 |
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Frequency of refreshing queue, stage 1 |
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Frequency of refreshing queue, stage 2 |
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Optimization Termination Options: |
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Pause after stage 1; do not start stage 2 |
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Pause when feasible, stage 1 |
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Pause when feasible, stage 2 |
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Maximum number of iterations, stage 1 |
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Maximum number of iterations, stage 2 |
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Negates ENDPAUSE1 |
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Negates FEASIBLEPAUSE1 |
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Negates FEASIBLEPAUSE2 |
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Pause every PAUSE1 iterations, stage 1 |
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Pause every PAUSE2 iterations, stage 2 |
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Interior Point Algorithm Options: |
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Use interior point algorithm |
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Factorization method |
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Allowed amount of dual infeasibility |
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Allowed amount of primal infeasibility |
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Allowed total amount of dual infeasibility |
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Allowed total amount of primal infeasibility |
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Cut-off tolerance for Cholesky factorization |
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Density threshold for Cholesky processing |
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Step-length multiplier |
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Preprocessing type |
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Print optimization progress on SAS log |
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Interior Point Stopping Criteria Options: |
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Maximum number of interior point iterations |
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Primal-dual (duality) gap tolerance |
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Stop because of complementarity |
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Stop because of duality gap |
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Stop because of complementarity |
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Stop because of duality gap |
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Stop because of complementarity |
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Stop because of duality gap |
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Stop because of complementarity |
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Stop because of duality gap |
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PRINT Statement Options: |
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Display everything |
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Display arc information |
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Display nonarc variable information |
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Display variable information |
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Display constraint information |
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Display information for some arcs |
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Display information for some nonarc variables |
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Display information for some variables |
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Display information for some constraints |
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Display information for some constraints associated with some arcs |
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Display information for some constraints associated with some nonarc variables |
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Display information for some constraints associated with some variables |
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PRINT Statement Qualifiers: |
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Produce a short report |
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Produce a long report |
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Display arcs/variables with zero flow/value |
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Display arcs/variables with nonzero flow/value |
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Display basic arcs/variables |
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Display nonbasic arcs/variables |
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SHOW Statement Options: |
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Show problem, optimization status |
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Show network model parameters |
NETSTMT |
|
Show data sets that have been or will be created |
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Show options that pause optimization |
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Show simplex algorithm options |
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Show pricing strategy options |
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Show miscellaneous options |
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SHOW Statement Qualifiers: |
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Display information only on relevant options |
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Display options for current stage only |
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Miscellaneous Options: |
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Infinity value |
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Scale constraint row, nonarc variable column coefficients, or both |
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Maximization instead of minimization |
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Use warm start solution |
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All-artificial starting solution |
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Output complete basis information to ARCOUT= and NODEOUT= data sets |
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Output complete basis information to CONOUT= and DUALOUT= data sets |
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Turn off infeasibility or optimality flags |
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Negates FUTURE1 |
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Negates FUTURE2 |
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Negates SCRATCH |
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Negates ZTOL1 |
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Negates ZTOL2 |
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Write optimization time to SAS log |
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No stage 1 optimization; do stage 2 optimization |
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Suppress similar SAS log messages |
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Use zero tolerance, stage 1 |
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Use zero tolerance, stage 2 |